DOM Presence & Indexability
Most modern modals are "teleported" or injected into the DOM only when triggered by a user's click. This CSS-first modal exists in the HTML source from the moment the page loads. Search engines can crawl and index the text inside the modal (like terms of service or detailed specs) as primary content, ensuring no information is lost to "lazy-loading" scripts.
大多数现代弹窗仅在用户点击触发时才被“传送”或注入到 DOM 中。这种CSS 优先弹窗从页面加载那一刻起就存在于 HTML 源码中。搜索引擎可以将弹窗内的文本（如服务条款或详细规格）作为主要内容进行抓取和索引，确保不会因脚本“懒加载”而丢失任何信息。